Quality & certification
Certified alloy.
Weighed settlement.
There is one grade in this catalogue and it is documented end to end — from heat number to weighbridge ticket. What we don’t do is decorate the site with badges: certification here means paper you can verify.
AISI 304 — the whole catalogue
Austenitic chromium-nickel stainless: the standard alloy for public-realm railing — corrosion-resistant, weldable, and polishable to satin or mirror. Tube to ASTM A554; material chemistry per EN 10088-2 / ASTM A240.
| AISI / ASTM | 304 |
|---|---|
| EN | 1.4301 · X5CrNi18-10 |
| JIS | SUS304 |
| C | 0.08 max |
|---|---|
| Si | 1.00 max |
| Mn | 2.00 max |
| P | 0.045 max |
| S | 0.030 max |
| Cr | 17.5 – 19.5 |
| Ni | 8.0 – 10.5 |
Manufacturing standards
Tube manufacture
ASTM A554 — welded stainless mechanical tubing
Material
EN 10088-2 / ASTM A240 chemistry, 304
Surface
320-grit satin polish; mirror on brackets and caps
Fasteners
A2 (304) stainless throughout
Assurance, on paper
Mill test certificates
EN 10204 3.1 mill certificates issued with every consignment, traceable to heat number.
Weighed settlement
Tube is settled on weighbridge mass, not theoretical mass — the figure on the packing list is the figure on the scale.
Third-party inspection
SGS or Bureau Veritas pre-shipment inspection arranged on request, at cost.
Dimensional control
Wall thickness, section size and length checked per bundle against the order line.